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Role of fixture forces on distortion in gas tungsten arc welding: An experimental and modelling approach
University West, Department of Engineering Science, Division of Electrical and Automation Engineering. (PTW)ORCID iD: 0000-0001-5734-294X
University West, Department of Engineering Science, Division of Electrical and Automation Engineering. (PTW)ORCID iD: 0000-0001-5608-8636
University West, Department of Engineering Science, Division of Electrical and Automation Engineering. (PTW)
2011 (English)In: Proceedings of the Institution of mechanical engineers. Part B, journal of engineering manufacture, ISSN 0954-4054, E-ISSN 2041-2975, Vol. 225, no 1, 140-148 p.Article in journal (Refereed) Published
Abstract [en]

Simulation and experiments show that the fixture clamping force has a significant influence on the structural integrity of a welded workpiece. This understanding is of great importance for the manufacture of aerospace components with tight tolerances in the specifications. The focus in the present study is on the temperature history during welding and residual deformation; its main contribution is a demonstrator designed for evaluation of the influence of fixture clamping forces and validation of the simulation results. The demonstrator concerns a simplified situation considering gas tungsten arc welding of a nickel-based metal plate fixed by a specially designed fixture, where one side of the plate was clamped with different levels of force. The temperature history was measured during the weld sequence and deformation measurements were performed after cooling and release of the workpiece from the fixture. The results from simulation and experimentation showed good agreement. The proposed strategy is industrially competitive and has shown that the looser the fixture clamps, the smaller the residual deformation. Furthermore, the study provides a knowledge base for selection of active fixture concepts in that the fixture clamping force can be determined in advance and possibly also be subject to force control.

Place, publisher, year, edition, pages
Sage Publications, 2011. Vol. 225, no 1, 140-148 p.
Keyword [en]
Finite element analysis; Fixture clamping force; Gas tungsten arc welding; Nickel-based steel; Residual deformation. Aerospace components; Clamping Force; Deformation measurements; Gas tungsten arc welding; Knowledge base; Metal plates; Nickel-based steel; Residual deformation; Simulation result; Temperature history; Tight tolerances; Work pieces
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-2861DOI: 10.1177/09544054JEM2048OAI: oai:DiVA.org:hv-2861DiVA: diva2:372566
Available from: 2010-11-26 Created: 2010-11-26 Last updated: 2016-02-08Bibliographically approved
In thesis
1. Modeling and simulation for welding automation
Open this publication in new window or tab >>Modeling and simulation for welding automation
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Göteborg: Chalmers, 2010. 158 p.
Series
Doktorsavhandlingar vid Chalmers tekniska högskola, ISSN 0346-718X ; 3132
Keyword
welding automation, fixturing, finite element modeling, heat conduction, model order reduction, sensors, welding simulation, controller design
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-2870 (URN)978-91-7385-451-1 (ISBN)
Available from: 2010-12-03 Created: 2010-11-29 Last updated: 2016-02-09Bibliographically approved

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Sikström, FredrikChristiansson, Anna-KarinLennartson, Bengt
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